Shocking incorrect charges poor assistance

I called last week to upgrade so that we could watch the rugby. The gentleman advised it will cost A further R137/139 and I call call after 5 days to revert to what I previously had. I called today after nearly 40 minutes the consultant had jo idea of what she was doing. She requested that I pay R481 because I have 2 decoders ??? And on the 1st my normal installment will be paid. All I want to do is revert to my previously package. Do I have to pay 481 plus my current installment.

Sounds incorrect as I was told +- 139.00.